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Finding the Fourth Proportional to 158,157.10, 236,973.20 and 111,311.56

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Solution

The fourth proportional to 158,157.10, 236,973.20 and 111,311.56 is: 166,782.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,157.10 : 236,973.20 = 111,311.56 : x
  2. Step 2: Convert to fraction form
    158,157.10/236,973.20 = 111,311.56/x
  3. Step 3: Cross multiply
    158,157.10x = 236,973.20 × 111,311.56
  4. Step 4: Simplify right side
    158,157.10x = 26,377,856,013.63
  5. Step 5: Solve for x
    x = 26,377,856,013.63/158,157.10
  6. Step 6: Final answer
    x = 166,782.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.